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// SPDX-License-Identifier: GPL-3.0-or-later
#ifndef RCC_CODEGEN_REGISTERMASK_H
#define RCC_CODEGEN_REGISTERMASK_H
#include "rcc/CodeGen/Register.h"
#include <cstddef>
#include <cstdint>
#include <span>
#include <utility>
#include <vector>
namespace rcc {
class RegisterMask final {
public:
explicit RegisterMask(std::vector<std::uint64_t> PreservedWords)
: PreservedWords(std::move(PreservedWords)) {}
[[nodiscard]] bool preserves(PhysicalRegister PhysReg) const noexcept;
[[nodiscard]] bool clobbers(PhysicalRegister PhysReg) const noexcept {
return !preserves(PhysReg);
}
[[nodiscard]] std::span<const std::uint64_t> words() const noexcept {
return PreservedWords;
}
friend bool operator==(const RegisterMask &Left, const RegisterMask &Right) = default;
private:
std::vector<std::uint64_t> PreservedWords;
};
} // namespace rcc
#endif // RCC_CODEGEN_REGISTERMASK_H
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